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Power communication network equipment fault diagnosis method based on multi-controller cooperatio

A technology for power communication network and equipment failure, applied in the direction of electrical components, data exchange network, digital transmission system, etc., can solve problems such as the network environment that is not applicable to multiple controllers, and achieve guaranteed accuracy and false alarm rate performance , Reduce the loss of diagnostic information, and reduce the effect of time overhead

Inactive Publication Date: 2019-10-29
GUANGDONG POWER GRID CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to overcome the problem that the existing method is not applicable to the network environment composed of multiple controllers, and provide a multi-controller cooperative power communication network equipment fault diagnosis method, which can improve the fault diagnosis efficiency and is applicable to Network environment composed of multiple controllers

Method used

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  • Power communication network equipment fault diagnosis method based on multi-controller cooperatio
  • Power communication network equipment fault diagnosis method based on multi-controller cooperatio
  • Power communication network equipment fault diagnosis method based on multi-controller cooperatio

Examples

Experimental program
Comparison scheme
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Embodiment 1

[0049] Such as Figure 1 to Figure 6 Shown is the first embodiment of a multi-controller cooperative power communication network equipment fault diagnosis method of the present invention, which is applied to an SDN software-defined network. The power communication network equipment includes a main controller and several communication devices connected to the main controller. A sub-controller, a plurality of transponders are connected in communication on the sub-controller, and the method comprises the following steps:

[0050] S1. Build a fault propagation model based on Bayesian decision theory;

[0051] S2. After step S1, several sub-controllers receive the network symptom information sent by the transponder, and then send the network symptom information to the main controller;

[0052] S3. After step S2, the master controller generates FPM summary request information, and sends it to relevant sub-controllers;

[0053] S4. After step S3, the sub-controller generates the FP...

Embodiment 2

[0078] This embodiment is similar to Embodiment 1, except that in this embodiment, in step S5, the formula for calculating the ability of the failure set h to explain symptoms is:

[0079]

[0080] In the formula, BF(f) represents the belief function that the fault f actually occurs, Indicates the trust value of all fault information contained in the fault set h, Denotes the probability that the observed symptom is caused by at least one fault f in the fault set h.

[0081] The calculation formula of the trust function that the fault f actually occurs is:

[0082]

[0083] In the formula, pro(f) represents the probability that fault f causes at least one symptom s to occur, N f Indicates the number of links that will be affected when a fault f occurs, |S f |Denotes the number of symptoms s caused by fault f;

[0084] Among them, the calculation formula of the probability that the fault f causes at least one symptom s to occur is:

[0085]

[0086] In the formul...

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Abstract

The invention relates to the technical field of power communication network equipment fault diagnosis, in particular to a power communication network equipment fault diagnosis method based on multi-controller cooperation, which is applied to an SDN (Software Defined Network) and comprises the following steps: a fault propagation model based on a Bayesian decision theory is constructed; the plurality of sub-controllers receive the network symptom information sent by the transponder and then send the network symptom information to the main controller; the main controller generates FPM abstract request information and sends the FPM abstract request information to the related sub-controllers; the sub-controllers generate FPM abstracts and then send the FPM abstracts to the main controller forcombination; the main controller generates FPM information for fault diagnosis. The method can improve the fault diagnosis efficiency, and can be suitable for a network environment formed by a plurality of controllers.

Description

technical field [0001] The present invention relates to the technical field of fault diagnosis of electric power communication network equipment, and more particularly, relates to a multi-controller cooperative electric power communication network equipment fault diagnosis method. Background technique [0002] SDN, that is, software-defined network. In the SDN environment, the communication facilities of the power communication network are composed of controllers and transponders, which realize the separation and centralized control of transfer and control. However, in the SDN environment, the controller becomes the brain of the network, and the forwarder only forwards data according to the routing table delivered by the corresponding controller. The SDN network will contain multiple controllers, and each controller only manages a part of the transponders. When a transponder fails, assistance among multiple controllers is required to locate the fault, which takes a long tim...

Claims

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Application Information

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IPC IPC(8): H04L12/24
CPCH04L41/0631H04L41/0677H04L41/145
Inventor 莫穗江李瑞德杨玺汤铭华王锋张欣欣高国华彭志荣陈嘉俊张欣梁英杰廖振朝李伟雄童捷张天乙
Owner GUANGDONG POWER GRID CO LTD